210 CARYOPHYLLACEiE. Velezia. 



10. CERASTIUM. Sepals in our species 5. Petals as many, retuse or bifid, very rarely 

 subentire, white. Stamens 10, or sometimes fewer. Styles 5 (4 or 3). Capsule usually 

 exceeding the calyx, often curved ; seeds numerous, more or less laterally compressed. 



•I— -I— Capsule ovoid or oblong, relatively short, dehiscent by as many or twice as many 

 teeth as there are carpels. 

 ++ Styles usually fewer than the sepals, when of the same number opposite them. 



11. STELLARIA. Sepals 5 (or 4). Petals .5 (or 4, rarely abortive or absent), always 

 more or less deeply bifid, often divided almost to the base, white. Stamens 3 to 10. Styles 

 3 or 4, rarely 5. 



12. ARENARIA. Sepals 5. Petals as many, white or nearly so, entire or emarginate 

 (very rarely minute or wanting). Stamens 10, or often fewer by abortion. Styles 3 or 4 ; 

 seeds many. 



++ ++ Styles as many as the sepals and alternate with them. 



13. S AGIN A. Sepals 5 (rarely 4). Petals as many, entire or emarginate, white, not rarely 

 absent. Stamens usually 5, less frequently 3 to 10. Valves of the capsule as many as the 

 sepals and opposite them ; seeds several to many. 



* * Stipules present, scarious : petals undivided. 



14. SPERGULARIA. Sepals 5. Petals 5 (rarely fewer or none), purplish or white. 

 Stamens commonly 10. Styles 3 (very rarely .5) ; ovary 1 -celled. Valves of the capsule as 

 many as the styles, when 5 in number alternate with the sepals; seeds often margined. 

 Leaves linear or filiform. 



15. SPERGULA. Sepals 5. Petals 5, white. Stamens 10 (rarely 5). Styles 5; ovary 

 1-celled, many-ovuled. Valves of the capsule 5, opposite the sepals ; seeds acutely margined 

 or narrowly winged. Leaves narrow, linear, verticillate and fascicled in the axils. 



Tribe III. POLYCARPE.S. Sepals free or somewhat united at the base. Petals 

 commonly small, not distinctly unguiculate, borne, together with the stamens, upon 

 a hypogynous or slightly perigynous disk. Style simple below, 3- or more rarely 

 2-branched above ; stigmas rarely sessile on the ovary. 



* Petals 2 - 5-parted. 



16. DRYMARIA. Sepals 5, often scarious-margined. Petals 5. Stamens 3 to 5, slightly 

 perigynous. Ovary 1-celled, several -many-ovuled. Capsule 3-valved. Flowers small, white 

 or nearly so. Leaves flat, though often narrow, opposite or pseudoverticillate. Stipules 

 small, free, scarious or bristle-formed, sometimes fugacious. 



* * Petals entire, denticulate, or none. 

 -1— Cauline leaves numerous, flat, not linear-setaceous. 



17. POLYCARPON. Sepals 5, more or less cariuate, entire, scarious-margined. Petals 

 5, small, shorter than the sepals, sometimes emarginate. Stamens 3 to .5. Ovary 1-celled. 

 Capsule 3-valved, several-seeded ; seeds ovoid with the embryo but little curved. 



-t— -K- Cauline leaves setaceous. 



18. LCEFLINGIA. Sepals 5, cariuate and produced to rather rigid setaceous tips; the 

 three outer ones commonly bearing a setaceous tooth on each side. Petals 3 to 5, small, or 

 none. Stamens 3 (to 5 ?). Ovary 1-celled, several-seeded, triangular. Capsule 3-valved ; 

 seeds oblong, attached laterally near the base ; embryo somewhat curved ; cotyledons 

 accumbent. 



•t— H— -I— Leaves forming a radical rosette ; the cauline minute or obsolete ; basal stipules 

 lacerate. 



1 9. STIPULICIDA. Sepals 5, distinct, somewhat rigid, obtuse, often emarginate, scarious- 

 margined. Petals 5, oblong, gradually contracted below, hypogynous. Stamens 5. Capsule 

 ovate-globose, 3-valved, many-seeded. 



1. VELiJ^ZIA, Loefl. (Named for Cristobal Velez, friend of Locfling and 

 author of an unpublished flora of Madrid, and not, as is sometimes said, Francisco 



